作业帮1、（8/15÷0.32-7/9×0.375）÷1 又3/8=2、1又3/7×(3又1/13-1又9/11)×0.7×28又3/8=3、0.5×236×59/119=4、(1又1/1992×3.6+3又3/5×8又1991/1992)÷9又3/5÷3又3/4=5、(20又94/95×1.65-20又94/95+20又95/94)×47.5×0.8×2.5=6、(9又2/7+7
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/03 01:20:06
1、（8/15÷0.32-7/9×0.375）÷1 又3/8=2、1又3/7×(3又1/13-1又9/11)×0.7×28又3/8=3、0.5×236×59/119=4、(1又1/1992×3.6+3又3/5×8又1991/1992)÷9又3/5÷3又3/4=5、(20又94/95×1.65-20又94/95+20又95/94)×47.5×0.8×2.5=6、(9又2/7+7
1、（8/15÷0.32-7/9×0.375）÷1 又3/8=
2、1又3/7×(3又1/13-1又9/11)×0.7×28又3/8=
3、0.5×236×59/119=
4、(1又1/1992×3.6+3又3/5×8又1991/1992)÷9又3/5÷3又3/4=
5、(20又94/95×1.65-20又94/95+20又95/94)×47.5×0.8×2.5=
6、(9又2/7+7又2/9)÷(5/7+5/9)=
1、（8/15÷0.32-7/9×0.375）÷1 又3/8=2、1又3/7×(3又1/13-1又9/11)×0.7×28又3/8=3、0.5×236×59/119=4、(1又1/1992×3.6+3又3/5×8又1991/1992)÷9又3/5÷3又3/4=5、(20又94/95×1.65-20又94/95+20又95/94)×47.5×0.8×2.5=6、(9又2/7+7
1、（8/15÷0.32-7/9×0.375）÷1 又3/8
=(8/15x25/8-7/9x3/8)x8/11
=(5/3-7/24)x8/11
=11/8x8/11
=1
2、1又3/7×(3又1/13-1又9/11)×0.7×28又3/8
=10/7x(3+1/13-1-9/11)x7/10x(28+3/8)
=(2-106/143)x227/8
=180/143x227/8
=10215/286
(题目有问题）
3、0.5×236×59/119
=118x59/119
=(119-1)x59/119
=119x59/119-59/119
=59-59/119
=58又60/119
4、(1又1/1992×3.6+3又3/5×8又1991/1992)÷9又3/5÷3又3/4=
=3.6x(1又1/1992+8又1991/1992)x[48/5]/[15/4]
=3.6x10x48/5x4/15
=92.16
5、(20又94/95×1.65-20又94/95+20又95/94)×47.5×0.8×2.5=
=20又94/95x(1.65-1+1)x47.5x2
=20又94/95x33/20x95
=1994/95x33/20x95
=3290.1
6、(9又2/7+7又2/9)÷(5/7+5/9)
=(9+2/7+7+2/9)/[80/63]
=(16+32/63)x63/80
=16x63/80+32/63x63/80
=63/5+32/80
=13